TY - JOUR

T1 - Alginate-based membranes

T2 - Paving the way for green organic solvent nanofiltration

AU - Aburabie, Jamaliah H.

AU - Puspasari, Tiara

AU - Peinemann, Klaus Viktor

N1 - Funding Information: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology ( KAUST ) under award number BAS/1/1332-01-01 . Appendix A

PY - 2020/2/15

Y1 - 2020/2/15

N2 - In this study, green bio-membranes were investigated. Alginate membranes were prepared by crosslinking of sodium alginate in calcium chloride aqueous solution. By fabricating membranes simply using three abundant cheap materials i.e. sodium alginate, salt and water, we have demonstrated membranes with acceptable performance for OSN with excellent chemical stability. Membranes prepared on three different polymeric supports (PAN, crosslinked PAN and Cellulose) showed similar performance. The alginate membranes were also spun coated on glass plate and laminated on alumina support. Great chemical stability was observed towards various solvents including dimethylformamide and dimethylsulfoxide. Characterization tests with FTIR, SEM, AFM and contact angle were carried out. Using same support, many parameters were explored such as the alginate concentration and the post treatment such as drying, crosslinking or precipitating in non-solvent. The range of the membranes permeance was 0.08–1.8 L/m2 h bar depending on conditions used. The nanofiltration experiments revealed a molecular weight cut off of about 1200 g/mol when tested with dyes such as Methyl Orange, Brilliant Blue and vitamin B12 in methanol. We initiated the preparation of fully green organic solvent nanofiltration membranes using green routes by preparing alginate selective layer on top of cellulose support. This study demonstrates that alginate membranes can be a promising candidate for green organic solvent nanofiltration.

AB - In this study, green bio-membranes were investigated. Alginate membranes were prepared by crosslinking of sodium alginate in calcium chloride aqueous solution. By fabricating membranes simply using three abundant cheap materials i.e. sodium alginate, salt and water, we have demonstrated membranes with acceptable performance for OSN with excellent chemical stability. Membranes prepared on three different polymeric supports (PAN, crosslinked PAN and Cellulose) showed similar performance. The alginate membranes were also spun coated on glass plate and laminated on alumina support. Great chemical stability was observed towards various solvents including dimethylformamide and dimethylsulfoxide. Characterization tests with FTIR, SEM, AFM and contact angle were carried out. Using same support, many parameters were explored such as the alginate concentration and the post treatment such as drying, crosslinking or precipitating in non-solvent. The range of the membranes permeance was 0.08–1.8 L/m2 h bar depending on conditions used. The nanofiltration experiments revealed a molecular weight cut off of about 1200 g/mol when tested with dyes such as Methyl Orange, Brilliant Blue and vitamin B12 in methanol. We initiated the preparation of fully green organic solvent nanofiltration membranes using green routes by preparing alginate selective layer on top of cellulose support. This study demonstrates that alginate membranes can be a promising candidate for green organic solvent nanofiltration.

KW - Alginate membranes

KW - Composite membranes

KW - Green membranes

KW - NaAlg

KW - Organic solvent nanofiltration

KW - Reaction-induced phase separation

UR - http://www.scopus.com/inward/record.url?scp=85075465488&partnerID=8YFLogxK

U2 - 10.1016/j.memsci.2019.117615

DO - 10.1016/j.memsci.2019.117615

M3 - Article

AN - SCOPUS:85075465488

VL - 596

JO - Journal of membrane science

JF - Journal of membrane science

SN - 0376-7388

M1 - 117615

ER -